Tunnel noise reduction system and preparation method thereof

Abstract

The invention discloses a tunnel sound attenuation and noise reduction system and a preparation method thereof. The tunnel sound attenuation and noise reduction system comprises a sound attenuation box body with a cavity inside, a sound absorption plate is arranged on one side face of the sound attenuation box body, a cavity rubber layer and a plurality of rubber protrusions arranged on the cavity rubber layer are arranged on the inner side face of the sound attenuation box body, and sound attenuation layers are arranged on the rubber protrusions. The mode that the silencing box body, the sound-absorbing plate, the rubber protrusions, the cavity rubber layer and the silencing layer are combined is adopted, noise generated by vehicle tires in a tunnel and a road surface can enter the silencing box body through sound-absorbing through holes in the sound-absorbing plate, after the noise enters the silencing box body, the noise continuously vibrates and rubs with the rubber protrusions and the silencing layer, and the noise reduction effect is achieved. And the sound energy is continuously lost until the energy of the noise is completely consumed, so that the purpose of eliminating the noise is achieved, and the noise is effectively prevented from entering the tunnel to influence the driving safety and comfort.

Description

technical field [0001] The invention relates to the field of noise reduction, in particular to a tunnel noise reduction system and a preparation method thereof. Background technique [0002] Noise is the sound produced by the sounding body when it vibrates irregularly. It should not exist in a certain environment, and the noise will directly affect people's physical and mental health and mood. Tunnels are an effective and direct means of passing through mountains at this stage, and are being used more and more in engineering. However, due to the airtight tunnel space, the sound generated by the friction between the vehicle body and the air tires and the road surface cannot be diffused in time when the vehicle passes through. Noise is formed in a short time, which will cause an impact on the passage of subsequent vehicles. In order to reduce the noise in the tunnel, most of the sound-absorbing panels used in the existing tunnels are porous media. Although they can play a cer...

AI Technical Summary

Problems solved by technology

Tunnels are an effective and direct means of passing through mountains at this stage, and are being used more and more in projects. However, due to the airtight tunnel space, the sound generated by the friction between the vehicle body and the air tires and the road surface cannot be diffused in time when the vehicle passes through. Noise is formed in a short time, which will affect the passing of subsequent vehicles

In order to reduce the noise in the tunnel, most of the sound-absorbing panels used in the existing tunnels are porous media. Although they can play a certain role in noise reduction, there are the following deficiencies: 1. There is no noise reduction and noise reduction system on both sides of the tunnel. The noise from the friction between vehicle tires and the ground is directly reflected into the tunnel space, which amplifies the noise; 2. It cannot absorb and eliminate a large amount of noise in a short time, causing the noise to be reflected back into the tunnel chamber, causing secondary noise impact on the tunnel; 3. Sound-absorbing panels Once damaged, the whole piece needs to be replaced, which leads to high management costs; 4. The sound-absorbing panel only relies on the holes of porous media to reduce noise, resulting in low utilization rate of the panel and poor noise reduction effect

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